02-19-2007 09:48 PM - edited 03-03-2019 03:49 PM
I have been given details for a VPN setup that we use to connect to a GPRS network. We are currently using a Linux IPSec Software solution but I'm now provisioning an Integrated Services Router 1841. I am a little unsure of how to create the VPN in our 1841 to connect. The remote side is using a 7206 but they will not supply a config for us to use. Details are;
Phase 1 (ISKAMP)
Encryption: 3DES
Hash: MD5
Auth: PSK
Diffie-Hellman: 2
Lifetime: 86400
Phase 2 (IPSec)
Transform-Set: ESP-3DES-MD5
Mode: Tunnel
PFS: No PFS
Lifetime: 4608000kB/3600sec
Attached is a diagram with public IPs changed. Can anyone offer some help with this? I am not sure whether I will need to use Crypto Maps and whether I will have to use ACLs
02-20-2007 12:25 AM
Hi Andrew
the easiest way to do this is to create a GRE Tunnel on each side and then encrypt the tunnel with an IPSEC profile.
Let Me know if you need an example config
02-20-2007 04:58 AM
Marvin,
The only problem with this solution is that the GRE tunnel requires another subnet over it, correct? I am using this sort of configuration for connectivity between branch offices, however I have no control over the configuration of the 7206 as it is run by Vodafone. When we asked for a configuration example, they said they don't give out configuration details apart from PSK and ISAKMP and IPSEC config requirements :(
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